<?php 

$new_name = '/data/www/ads.hearst.com.cn/upload_file/20120515213532.xls';

$convert = '/data/www/ads.hearst.com.cn/lib/xls2csv.pl';
$csvName = str_replace('.xls', '.csv', $new_name);
exec("$convert $new_name $csvName 1", $outArr);

echo "$convert $new_name $csvName 1";
echo "<pre>";
print_r($outArr);